Data / Nonprofits / California / Guerneville / Philanthropy, voluntarism and grantmaking foundations
Philanthropy, voluntarism and grantmaking foundations nonprofits in Guerneville, CA: 4 registered with the IRS
4 philanthropy, voluntarism and grantmaking foundations nonprofits are registered with the IRS in Guerneville, CA, 4 of them 501(c)(3) charities; the 1 that report revenue took in $43,706. The largest by revenue: Russian River Rotary Foundation ($43,706).
SpecStream is the live web data engine for teams and agents. It reads the IRS register of exempt organizations as the IRS updates it, and this page is that reading. Ask for the nonprofits you need by place, cause and size, with their latest Form 990 figures and websites, and they arrive in your sheet, CRM, Slack or agent.
Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Russian River Rotary Foundation | 501(c)(3) | 2011 | $43,706 | $112,667 | 2025-06 |
| Heck Foundation | 501(c)(3) | 2007 | $4.2 million | 2025-06 | |
| Korbel Disaster Relief Foundation | 501(c)(3) | 2019 | $0 | $0 | 2025-06 |
| Toast Life Foundation | 501(c)(3) | 2010 | $10,462 | 2026-04 |
Other causes in Guerneville, CA
Every nonprofit in Guerneville, CA · Philanthropy, voluntarism and grantmaking foundations nonprofits across the state · Nonprofits in every city of the state
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.